24172 bearing: complete specifications & equivalents
The 24172 is a ISO 15 radial bearing sized 360 x 600 x 243 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 360 mm |
| Outer diameter D | 600 mm |
| Width B | 243 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 5737 kN |
| Basic static load rating C0 | 9300 kN |
| Fatigue load limit Pu | 670 kN |
| Reference speed (thermal) | 400 rpm |
| Limiting speed (mechanical) | 600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 280000 g |
| Manufacturer designation | SKF 24172 ECCJ/W33 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 24100-series range
| Bore d | 14.173 in |
|---|---|
| Outer diameter D | 23.622 in |
| Width B | 9.567 in |
| ISO bore code | 72 |
| Radial section height (D−d)/2 | 120 mm |
| Smallest bore in 24100-series | 100 mm |
| Largest outer diameter in 24100-series | 790 mm |
| Width range across 24100-series | 65–308 mm |
| Bore position in 24100-series (smallest first) | 19 of 25 |
| Bore above smallest 24100-series size | 260 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 24172 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; D/B cross-verified against Schaeffler HR1 2022; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
| 24172-ECCK30J-W33 | SKF | full Dimensions and internal design equivalent — standard interchange. | Tapered-bore (1:30) execution on AOH24172 withdrawal sleeve; same ISO 15 envelope, separate order number. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the 24172 model number is decoded
SKF 24172 (24172 ECCJ/W33) is the spherical-roller choice for a 360 mm shaft — barrel rollers between an inner ring with two raceways and a common sphered outer raceway inside the 600×243 mm ISO 15 envelope. On the SKF nameplate, 24172 follows the ISO 15 convention: 2 for the spherical roller type, 41 for the dimension series 41 (medium OD, maximum width), final digits 72 for the 360 mm bore. CJ/ECCJ bearings here run a stamped steel window cage rather than the older two-cage CC arrangement; quote the full ECCJ/W33 designation when ordering, and do not assume the K tapered-bore execution is a field conversion. Selection arithmetic: the C0/C ratio is about 1.62 (static 9300 kN against dynamic 5737 kN), typical of a spherical roller sized for heavy combined loads, and the 670 kN fatigue load limit Pu is the equivalent-load floor used in the life calculation. A 360 mm rotating inner ring usually runs m6 on the shaft with H7 in the housing; for vibrating-screen duty the outer ring is instead held tight and the shaft seat loosened — follow the screen builder's fit schedule.
Typical equipment & failure modes
Common applications
- SAG and ball-mill drive shafts
- large mining crusher main shafts
- wind-turbine main shaft support
- heavy rolling-mill work-roll chocks
Known failure patterns
- raceway fatigue spalling of the sphered outer raceway after extended service above the catalogue L10 rating
- inner-ring raceway spalling from edge loading when misalignment exceeds the self-aligning recovery range
- stamped-steel cage fatigue after long service in high-vibration screening duty without the VA405 execution
- surface distress and smearing when the relubrication interval is exceeded — the W33 groove is only effective if grease actually reaches the roller rows
- rolling-contact fatigue spalling after the rated L10 life is exceeded
Selection pitfalls — read before you substitute
- At 360 mm bore the ring mass makes cocking during mounting a real risk; guide the bearing square, confirm seat contact around the full circumference, and re-check the self-aligning swing after the housing cap is torqued down.
- The 24100-series series at 360 mm bore (600×243 mm) is the heaviest medium-OD execution, built for extreme radial and shock loads at low speed; the 600 r/min ceiling is part of the design, not an afterthought — check it before using it in a faster drive.
- The self-aligning feature is not a license to ignore alignment: beyond ≈ 0.5–2.5° (series-dependent) the edge loading eats the fatigue margin, and seal drag grows as the rings tilt.
- Shaft and housing fillets must clear the bearing chamfer so the 243 mm-wide rings seat square; use an undercut or withdrawal groove rather than an oversized radius that locks on the ring face.
- The 5737/9300 kN ratings are SKF catalogue values for this exact execution (24172 ECCJ/W33); SKF can revise internal geometry without changing the order number, so keep the catalogue version (SKF catalogue PUB BU/P1 17000) with the specification and re-verify for critical drives.
- SKF lists several executions of 24172 (cylindrical bore as listed, tapered-bore 24172 CCK30/W33 variant, plus sealed and vibrating-screen options in the same envelope); they are not interchangeable order numbers — quote the full 24172 ECCJ/W33 designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 24172?
The 24172 ECCJ/W33 is a double-row spherical roller bearing with 360 mm bore, 600 mm outer diameter and 243 mm width (14.173 × 23.622 × 9.567 in) per ISO 15. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 5737 kN, C0 9300 kN, fatigue load limit Pu 670 kN, reference speed 400 r/min, limiting speed 600 r/min, mass about 280000 g. It is an open, self-aligning bearing with a stamped sheet-steel window-type cage with low-friction guidance (CJ design).
How does the 24172 bore code work?
The last two digits of 24172 are bore code 72, so 72 × 5 = 360 mm bore. The 600 mm OD and 243 mm width come from the ISO 15 dimension-series plan (dimension series 41 (medium OD, maximum width)), shared with other spherical roller bearings of the same code.
What does the ECCJ/W33 suffix mean on 24172?
The suffix ECCJ/W33 reads ECCJ — the optimized, higher-capacity version of the CJ design, with a stamped sheet-steel window-type cage with low-friction guidance, plus W33 (outer-ring groove and three lubrication holes); CCK30/W33 is the 1:30 tapered-bore counterpart.
Can 24172 accommodate misalignment and axial load?
Yes on both counts. The sphered outer raceway lets the bearing self-align ≈ 0.5–2.5° depending on series, absorbing shaft deflection and housing-seat errors. The two barrel-roller rows also carry bidirectional axial load in addition to heavy radial load — this is the key difference from cylindrical roller bearings, which take no axial load.
When should the tapered-bore 24172K30 variant be used instead?
Choose the K30 (1:30 tapered bore) variant when the bearing must seat on an adapter or withdrawal sleeve — typical for long shafts, frequent dismounting, or stepped shafts where machining a precision journal is impractical. Sleeve mounting requires measuring clearance reduction or axial drive-up, not nut torque. The cylindrical-bore 24172 listed here seats directly on a machined journal.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 9.1 spherical roller bearings on 2026-09-26. Read our editorial & correction policy.